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Analog Devices Inc. OP249GSZ-REEL7
- Part No.:
- OP249GSZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OP249GSZ-REEL7.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,980
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Product details
Overview
OP249GSZ-REEL7 from Analog Devices is a precision dual JFET-input operational amplifier optimized for high-speed, low-distortion signal conditioning. It delivers 22 V/µs typical slew rate, ≤1.2 µs settling time to 0.01%, and 200 µV typical input offset voltage - enabling accurate buffering of fast DAC outputs and ADC drivers in instrumentation-grade systems.
For engineers reviewing the OP249GSZ-REEL7 datasheet, OP249GSZ-REEL7 pinout, OP249GSZ-REEL7 application, or OP249GSZ-REEL7 equivalent, key selection criteria include symmetric slew behavior under 600 Ω load, 0.002% THD at 10 kHz, and guaranteed 55° phase margin for unity-gain-stable active filter and servo loop designs.
Technical Context
The OP249GSZ-REEL7 integrates two matched JFET-input amplifier cores with ultrahigh open-loop gain (≥1000 V/mV), differential input impedance of 10¹² Ω || 6 pF, and rail-to-rail output swing capability (±12.0 V into 2 kΩ). Its architecture ensures symmetrical positive/negative slew response even with capacitive loads up to 200 pF or resistive loads down to 600 Ω.
This dual op amp supports wide supply range (±4.5 V to ±18 V), operates across −40°C to +85°C (G grade), and features low 17 nV/√Hz voltage noise density at 1 kHz and 0.003 pA/√Hz current noise - making it suitable for precision analog front-ends where dc accuracy and dynamic linearity must coexist.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Slew Rate | 22 V/µs typical - enables clean 10 V p-p output at ≥1 MHz without slewing-induced distortion. |
| Settling Time (0.01%) | ≤1.2 µs maximum - ensures full-scale step fidelity for 12-bit DACs and SAR ADC drivers. |
| Input Offset Voltage | 200 µV typical - maintains <0.005% gain error in 10 V full-scale instrumentation amplifiers. |
| THD + N | 0.002% typical at 10 kHz - meets professional audio and spectral purity requirements. |
| Open-Loop Gain | ≥1000 V/mV minimum - guarantees <1 LSB error in high closed-loop gain (≥100×) sensor interfaces. |
| Supply Range | ±4.5 V to ±18 V - supports industrial ±15 V rails and low-voltage portable systems. |
| Input Bias Current | 30 pA typical - minimizes voltage error across high-impedance sources (e.g., piezoelectric sensors). |
Pinout & Package
OP249GSZ-REEL7 is supplied in an 8-lead SOIC (R-8) package per JEDEC MS-012, with lead finish matte tin and RoHS-compliant construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+IN A) | Noninverting input of Amplifier A | High-impedance JFET node; accepts signals within ±12.5 V common-mode range. |
| 2 (V−) | Negative supply rail | Connects to system negative rail (e.g., −15 V); decoupling required within 1 cm. |
| 3 (+IN B) | Noninverting input of Amplifier B | Electrically isolated from Amplifier A; enables dual-channel independent signal paths. |
| 4 (−IN B) | Inverting input of Amplifier B | Used for feedback configuration; matches −IN A in offset and bias current tracking. |
| 5 (OUT B) | Output of Amplifier B | Capable of ±12.0 V swing into 2 kΩ; drives 600 Ω loads with <0.1% distortion. |
| 6 (V+) | Positive supply rail | Connects to system positive rail (e.g., +15 V); requires local 0.1 µF + 10 µF decoupling. |
| 7 (OUT A) | Output of Amplifier A | Identical performance to OUT B; supports parallel output configurations if needed. |
| 8 (−IN A) | Inverting input of Amplifier A | Primary feedback node for A channel; low input capacitance (<5 pF) preserves stability. |
Key Features
| Feature | Design Value |
|---|---|
| Symmetric slew rate | Matches positive/negative slew (22 V/µs each) under 600 Ω load - eliminates net DC offset in servo integrators. |
| Low distortion at high frequency | 0.002% THD at 10 kHz with 10 V p-p output into 10 kΩ - enables high-fidelity audio and spectrum analyzer front-ends. |
| Fast transient recovery | 247 ns to 0.01% after 1 mA output current step - prevents missing codes in SAR ADC driver applications. |
| High open-loop gain linearity | Constant gain >1000 V/mV across output swing - ensures monotonicity in precision gain blocks and active filters. |
| Ultra-low input bias current | 30 pA typical - preserves signal integrity when interfacing with >100 MΩ source impedances (e.g., pH electrodes). |
Applications
| Output Amplifier for Fast DACs | Instrumentation Amplifier Front-End |
|---|---|
|
Use Scenario: Driving unipolar/bipolar outputs of 12-bit CMOS DACs (e.g., PM7545) with minimal code-dependent nonlinearity. IC Role / Device Role / Timing Role: Precision output buffer with sub-microsecond settling and <300 µV offset to preserve DAC integral nonlinearity (INL). Use Value: Maintains 12-bit linearity over full scale by minimizing offset drift induced by DAC output resistance variation (11–33 kΩ). |
Use Scenario: First-stage gain block in medical ECG or industrial strain gauge signal chains requiring high CMRR and low noise. IC Role / Device Role / Timing Role: Dual-channel differential input amplifier with matched JFET pairs enabling precise common-mode rejection. Use Value: Delivers 90 dB CMRR at DC and >76 dB up to 10 kHz, suppressing power-line interference without external trimming. |
| Active Filter for Data Acquisition | Low-Distortion Audio Buffer |
|
Use Scenario: Implementing 4th-order Butterworth anti-aliasing filters in 1 MSPS data acquisition systems. IC Role / Device Role / Timing Role: Unity-gain-stable, high-slew op amp configured as Sallen-Key or multiple-feedback topology. Use Value: Achieves <0.01% settling in <1.2 µs while maintaining phase margin >55° - avoids filter group delay distortion. |
Use Scenario: Line-level output stage in studio-grade audio converters and headphone amplifiers. IC Role / Device Role / Timing Role: Low-noise, low-THD buffer driving 600 Ω professional audio loads. Use Value: Delivers 0.002% THD+N at 10 kHz and 10 V p-p, meeting AES17 reference standards for broadcast equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual JFET op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD823ARZ | CMOS input (not JFET); lower 3.5 MHz GBW; higher 1.5 pA IB; no guaranteed symmetric slew. | Better for low-power, single-supply systems; less suitable for bipolar ±15 V DAC buffering. | Select AD823ARZ only when supply voltage is <±5 V or when ultra-low power (<1.5 mA/ch) is mandatory. |
| TL072CDR | JFET input but slower (13 V/µs); higher 3 mV VOS; 0.005% THD at 1 kHz only; no 0.01% settling spec. | Acceptable for general-purpose audio and non-critical filtering; not recommended for 12-bit+ precision DACs. | Choose TL072CDR only for cost-sensitive, non-precision applications where settling time >3 µs is acceptable. |
Compared with AD823ARZ and TL072CDR, OP249GSZ-REEL7 uniquely combines JFET input integrity, symmetric slew, and sub-microsecond 0.01% settling - making it the only option among the three qualified for metrology-grade DAC output stages and high-CMRR instrumentation front-ends.
Availability
OP249GSZ-REEL7 is available at Aetrix Electronics and suitable for precision instrumentation, high-speed data acquisition, and professional audio systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OP249GSZ-REEL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The OP249GSZ-REEL7 belongs to Analog Devices' precision high-speed op amp product line, engineered specifically to bridge the gap between dc accuracy and ac performance in demanding measurement and control systems.
FAQ
What is the operating temperature range for OP249GSZ-REEL7?
The OP249GSZ-REEL7 is rated for −40°C to +85°C operation (G grade), matching the specifications of the OP249G variant documented in the Rev. I datasheet. This range supports industrial control, test equipment, and commercial audio applications without derating. The device's thermal resistance (θJA = 150°C/W) and internal protection ensure reliable performance across this span when mounted on standard FR-4 PCBs with adequate copper pour.
Does OP249GSZ-REEL7 require external compensation for unity-gain stability?
No, OP249GSZ-REEL7 is internally compensated for unity-gain stability, as confirmed by its guaranteed 55° phase margin and stable step response in Figure 42 of the datasheet. However, when driving capacitive loads >100 pF (e.g., DAC output capacitance), a small series resistor (e.g., 33 Ω) or lead compensation capacitor (e.g., 33 pF) may be added at the output to suppress peaking - as demonstrated in Figure 49 for PM7545 DAC interface.
Can OP249GSZ-REEL7 drive a 600 Ω load while maintaining low distortion?
Yes, OP249GSZ-REEL7 is explicitly characterized to drive 600 Ω loads with ≤0.005% THD at 10 kHz (Figure 17) and delivers ±12.0 V output swing under that condition (Table 1). Its rugged output stage and symmetric slew behavior prevent crossover distortion and maintain linearity - making it suitable for professional audio line drivers and video distribution amplifiers.
What is the input voltage range specification for OP249GSZ-REEL7?
The OP249GSZ-REEL7 has a guaranteed input voltage range of ±12.5 V (with ±15 V supplies), as stated in Table 1 under "Input Voltage Range" with IVR = ±12.5 V. This allows direct interfacing with ±10 V industrial sensor outputs and ±12 V DAC references without attenuation or level-shifting circuitry.
How does the slew rate symmetry of OP249GSZ-REEL7 benefit servo controller designs?
The symmetric slew rate (22 V/µs both directions) in OP249GSZ-REEL7 eliminates net DC offset accumulation during repeated positive/negative transients in integrator-based servo loops. As described in the Applications Information section, nonsymmetric slew in legacy JFET op amps introduces harmonic content and residual DC - degrading position accuracy. OP249GSZ-REEL7's balanced response ensures zero-mean error over full-scale steps, critical for motion control repeatability.
OP249GSZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 22V/µs
- Gain Bandwidth Product:
- 4.7 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 pA
- Voltage - Input Offset:
- 400 µV
- Current - Supply:
- 5.6mA
- Current - Output / Channel:
- 36 mA
- Voltage - Supply Span (Min):
- 9 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OP249GSZ-REEL7 FAQ
1.How can I place an order for OP249GSZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for OP249GSZ-REEL7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for OP249GSZ-REEL7 reliable?
The price and inventory of OP249GSZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP249GSZ-REEL7 is usually 5 days.
3.What payment methods are accepted for OP249GSZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP249GSZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP249GSZ-REEL7?
OP249GSZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP249GSZ-REEL7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for OP249GSZ-REEL7?
For technical support, including OP249GSZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP249GSZ-REEL7 requirements.
6.How does Aetrix verify that OP249GSZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All OP249GSZ-REEL7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OP249GSZ-REEL7 meets industry standards.
7.What is the process for return or replacement of OP249GSZ-REEL7?
All OP249GSZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with OP249GSZ-REEL7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The OP249GSZ-REEL7 part is unused and in its original packaging.
Return procedure for OP249GSZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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